Issued Patents 1989
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4883108 | Heavy-duty pneumatic radial tire | Ken Takahashi | 1989-11-28 |
| 4881587 | Heavy duty pneumatic radial tire | Tatsuo Suzuki, Ken Takahashi | 1989-11-21 |
| 4872497 | Pneumatic radial tire and rim combination for passenger car | Ryoji Hanada, Tuneo Morikawa | 1989-10-10 |
| 4856573 | Pneumatic tire | Tuneo Morikawa, Shuichi Tsukada | 1989-08-15 |
| 4800941 | Heavy load radial tire | Ken Takahashi, Masashi Kida, Saichi Harada | 1989-01-31 |